嗨（抱歉可能是英文不好）。
我正在使用Wso2 Developer Studio构建Bpel工作流，在我的工作流中我需要调用几个Web服务，并且根据这些服务的输出采用不同的路径，为此我需要使用变量，但是我在wso2 bps中部署工作流程时出现编译错误：文件上传失败：BPEL编译失败！
我搜索过，有些人说这是命名空间问题，但我不知道如何解决这个问题。低于错误和bpel源。TID: [0] [BPS] [2014-03-11 10:23:30,889] ERROR {org.wso2.carbon.bpel.ui.fileupload.BPELUploadExecutor} - File upload failed :BPEL Compilation Failure! {org.wso2.carbon.bpel.ui.fileupload.BPELUploadExecutor}
java.lang.Exception: BPEL Compilation Failure!
at org.wso2.carbon.bpel.ui.fileupload.BPELUploadExecutor.validateBPELPackage(BPELUploadExecutor.java:295)
at org.wso2.carbon.bpel.ui.fileupload.BPELUploadExecutor.execute(BPELUploadExecutor.java:103)
at org.wso2.carbon.ui.transports.fileupload.AbstractFileUploadExecutor.executeGeneric(AbstractFileUploadExecutor.java:104)
at org.wso2.carbon.ui.transports.fileupload.FileUploadExecutorManager$CarbonXmlFileUploadExecHandler.execute(FileUploadExecutorManager.java:392)
at org.wso2.carbon.ui.transports.fileupload.FileUploadExecutorManager$FileUploadExecutionHandlerManager.startExec(FileUploadExecutorManager.java:276)
at org.wso2.carbon.ui.transports.fileupload.FileUploadExecutorManager.execute(FileUploadExecutorManager.java:125)
at org.wso2.carbon.ui.transports.FileUploadServlet.doPost(FileUploadServlet.java:57)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:755)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.eclipse.equinox.http.helper.ContextPathServletAdaptor.service(ContextPathServletAdaptor.java:37)
at org.eclipse.equinox.http.servlet.internal.ServletRegistration.service(ServletRegistration.java:61)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.processAlias(ProxyServlet.java:128)
at org.eclipse.equinox.http.servlet.internal.ProxyServlet.service(ProxyServlet.java:68)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at org.wso2.carbon.tomcat.ext.servlet.DelegationServlet.service(DelegationServlet.java:68)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.wso2.carbon.tomcat.ext.filter.CharacterSetFilter.doFilter(CharacterSetFilter.java:61)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:178)
at org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:49)
at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:141)
at org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:156)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:52)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1653)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
Caused by: org.apache.ode.bpel.compiler.api.CompilationException: error: [CompilationErrors] Compilation completed with 2 error(s):
file:/C:/WSO2BP~1.0/bin/../tmp/work/bpelTemp/1.394551410832569E12/TestVars_1.0.0/TestVars.bpel:42: error: [UndeclaredXsdType] Attempt to reference undeclared XSD type "{http://www.w3.org/2001/XMLSchema}string".
file:/C:/WSO2BP~1.0/bin/../tmp/work/bpelTemp/1.394551410832569E12/TestVars_1.0.0/TestVars.bpel:68: error: [UndeclaredVariable] Attempt to reference undeclared variable "VarTest".
at org.apache.ode.bpel.compiler.BpelCompiler.compile(BpelCompiler.java:815)
at org.apache.ode.bpel.compiler.BpelC.compile(BpelC.java:278)
at org.apache.ode.bpel.compiler.BpelC.compile(BpelC.java:364)
at org.apache.ode.store.DeploymentUnitDir$5.run(DeploymentUnitDir.java:221)
at org.apache.ode.utils.InternPool.runBlock(InternPool.java:57)
at org.apache.ode.store.DeploymentUnitDir.compile(DeploymentUnitDir.java:218)
at org.apache.ode.store.DeploymentUnitDir.compile(DeploymentUnitDir.java:177)
at org.wso2.carbon.bpel.ui.fileupload.BPELUploadExecutor.validateBPELPackage(BPELUploadExecutor.java:292)
... 38 more
bpel代码：
<!-- TestVars BPEL Process [Generated by the Eclipse BPEL Designer] -->
<!-- Date: Mon Mar 05 12:13:11 IST 2012 -->
<bpel:process name="TestVars"
targetNamespace="http://wso2.org/bps/sample"
suppressJoinFailure="yes"
xmlns:tns="http://wso2.org/bps/sample"
xmlns:bpel="http://docs.oasis-open.org/wsbpel/2.0/process/executable"
xmlns:ns1="http://www.w3.org/2001/XMLSchema" xmlns:ns="http://facade.uaecd.gov.co/" xmlns:xsd="http://facade.uaecd.gov.co/types/">
<!-- Import the client WSDL -->
<bpel:import namespace="http://facade.uaecd.gov.co/" location="WSVerificarRegistroPredio.wsdl" importType="http://schemas.xmlsoap.org/wsdl/"></bpel:import>
<bpel:import location="TestVarsArtifacts.wsdl" namespace="http://wso2.org/bps/sample"
importType="http://schemas.xmlsoap.org/wsdl/" />
<!-- ================================================================= -->
<!-- PARTNERLINKS -->
<!-- List of services participating in this BPEL process -->
<!-- ================================================================= -->
<bpel:partnerLinks>
<!-- The 'client' role represents the requester of this service. -->
<bpel:partnerLink name="client"
partnerLinkType="tns:TestVars"
myRole="TestVarsProvider"
/>
<bpel:partnerLink name="GPLWSCatastro" partnerLinkType="tns:PLTypeWSCatastro1" partnerRole="RoleWSCatastro1"></bpel:partnerLink>
</bpel:partnerLinks>
<!-- ================================================================= -->
<!-- VARIABLES -->
<!-- List of messages and XML documents used within this BPEL process -->
<!-- ================================================================= -->
<bpel:variables>
<!-- Reference to the message passed as input during initiation -->
<bpel:variable name="input"
messageType="tns:TestVarsRequestMessage"/>
<!--
Reference to the message that will be returned to the requester
-->
<bpel:variable name="output"
messageType="tns:TestVarsResponseMessage"/>
<bpel:variable name="VarTest" type="ns1:string"></bpel:variable>
<bpel:variable name="GPLWSCatastroResponse" messageType="ns:WSVerificarRegistroPredio_getRegistroCatastroResponse"></bpel:variable>
<bpel:variable name="GPLWSCatastroRequest" messageType="ns:WSVerificarRegistroPredio_getRegistroCatastro"></bpel:variable>
</bpel:variables>
<!-- ================================================================= -->
<!-- ORCHESTRATION LOGIC -->
<!-- Set of activities coordinating the flow of messages across the -->
<!-- services integrated within this business process -->
<!-- ================================================================= -->
<bpel:sequence name="main">
<!-- Receive input from requester.
Note: This maps to operation defined in TestVars.wsdl
-->
<bpel:receive name="receiveInput" partnerLink="client"
portType="tns:TestVars"
operation="process" variable="input"
createInstance="yes"/>
<!-- Generate reply to synchronous request -->
<bpel:assign validate="no" name="Assign">
<bpel:copy>
<bpel:from>
<bpel:literal xml:space="preserve">0</bpel:literal>
</bpel:from>
<bpel:to variable="VarTest"></bpel:to>
</bpel:copy>
</bpel:assign>
<bpel:assign validate="no" name="Assign1">
<bpel:copy><bpel:from>
<bpel:literal xml:space="preserve"><ns:getRegistroCatastroElement xmlns:ns="http://facade.uaecd.gov.co/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ns:identificacion>ns:identificacion</ns:identificacion>
<ns:chip>ns:chip</ns:chip>
<ns:address>ns:address</ns:address>
<ns:correousuario>ns:correousuario</ns:correousuario>
<ns:pwd>ns:pwd</ns:pwd>
<ns:ipRemoto>ns:ipRemoto</ns:ipRemoto>
</ns:getRegistroCatastroElement></bpel:literal>
</bpel:from>
<bpel:to part="parameters" variable="GPLWSCatastroRequest"></bpel:to>
</bpel:copy>
<bpel:copy><bpel:from part="payload" variable="input">
<bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"><![CDATA[tns:input]]></bpel:query>
</bpel:from>
<bpel:to part="parameters" variable="GPLWSCatastroRequest">
<bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"><![CDATA[ns:chip]]></bpel:query>
</bpel:to>
</bpel:copy>
</bpel:assign>
<bpel:sequence name="Sequence">
<bpel:invoke name="Invoke" partnerLink="GPLWSCatastro" operation="getRegistroCatastro" portType="ns:WSVerificarRegistroPredio" inputVariable="GPLWSCatastroRequest" outputVariable="GPLWSCatastroResponse"></bpel:invoke>
</bpel:sequence>
<bpel:assign validate="no" name="Assign2">
<bpel:copy>
<bpel:from><bpel:literal><tns:TestVarsResponse xmlns:tns="http://wso2.org/bps/sample" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<tns:result>tns:result</tns:result>
</tns:TestVarsResponse>
</bpel:literal></bpel:from>
<bpel:to variable="output" part="payload"></bpel:to>
</bpel:copy>
<bpel:copy>
<bpel:from part="parameters" variable="GPLWSCatastroResponse">
<bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"><![CDATA[ns:result/xsd:respuesta]]></bpel:query>
</bpel:from>
<bpel:to part="payload" variable="output">
<bpel:query queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath1.0"><![CDATA[tns:result]]></bpel:query>
</bpel:to>
</bpel:copy>
</bpel:assign>
<bpel:reply name="replyOutput"
partnerLink="client"
portType="tns:TestVars"
operation="process"
variable="output"
/>
</bpel:sequence>
</bpel:process>